Medicare Advantage in Okanogan County, Washington
3,540 people in Okanogan County, Washington were enrolled in Medicare Advantage in October 2026, 28.9% of 12,230 eligible beneficiaries (+1.8 pts since October 2025). Centene Corporation is the largest parent organization with 39% of reported enrollment; 8 parent organizations have 11 or more members and the HHI is 2,841 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 1,512 members here are in plans that terminate or leave the county, and Elevance Health, Inc. leaves. MA plans offered go from 12 to 8.
Parent organizations in Okanogan County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Centene Corporation | 1,377 | −68 | 39.3% |
| Humana Inc. | 1,127 | +290 | 32.2% |
| Molina Healthcare, Inc. | 449 | −1 | 12.8% |
| UnitedHealth Group, Inc. | 298 | +104 | 8.5% |
| Community Health Plan of Washington | 144 | −67 | 4.1% |
| CVS Health Corporation | 79 | −2 | 2.3% |
| Elevance Health, Inc. | 15 | new | 0.4% |
| Cambia Health Solutions, Inc. | 13 | −3 | 0.4% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 3,963 beneficiaries in Okanogan County were assigned to 49 Medicare Shared Savings Program ACOs, 60.8% of assignable Original Medicare beneficiaries. Together, roughly 72% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.